Appliance for and method of boxing-in impressions, dentures, and the like



Dec. 8, 1931. E R STEALY 1,834,989

APPLIANCE FOR AND METHOD OF BOXING-IN IMPRESSIONS, DENTURES, AND THE LIKE Filed March 1, 1930 2 Sheets-4511681; l

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APPLIANCE FOR AND METHOD OF BOXING-IN IMPRESSIONS, DENTURES, AND THE LIKE Filed March 1, 1930 2 Sheets-Sheet 2 Patented Dec. 8, 1931 UNITED STATES PATENT OFFICE ELZA R. STEALY, OF SHENANDOAH, IOWA APPLIANCE FOR AND METHOD OF BOXING-IN IMPRESSIONS, DENTURES, AND THE LIKE Application filed March 1,

The object of my invention is to provide impressions, dentures and the like for the reception of plaster of Paris or of other plastic material used in making models or casts. In. dentistry through the pouring of plaster of Paris of a fluid-like consistency or of other plastic cast-forming material over and into casts are thereby made which are very essentiai in certain types of laboratory work.

Those familiar with dental practice will readily understand the purpose, the importance, the convenience and the advantages of the appliance, and the method pursued in its use and operation from the accompanying drawings of the same and the description of the appliance hereinafter set forth.

One object of my invention and method is to overcome thewaste of time and material resulting from present methods. in use in makingcasts. Another object is to secure casts that are neater in appearance, also, denser and freer from air bubbles than those secured by present methods. Other objects and advantages willpresent themselves as the specification proceeds.

The drawings illustrate a preferred form of the invention, yet it is to be understood that in adapting means to meet specific needs and requirements, thedesign or construction of the appliance may bevaried or changed in the minor details thereof within the scope of the invention as claimed, without departing from the spirit thereof. The appliance may also be used in other arts and practices than that of dentistry, hence I do not limit its field of usefulness to dentistry alone.

' For a full understanding of the invention and the merits thereof, reference is to be had to the accompanying description and drawings, in which drawings Figure 1 is a top plan View of the boxing-in appliance for boxingin impressions,dentures and the like. Figure 2 is a front elevation view' of the said appliance on the dotted line a.a, Fig.1,

suggesting through the medium of the dotted 1930. Serial No. 432,576.

or broken lines shown in Figures 1 and 2 and which are designated by the letters BB, the operation of certain movable and adjustable parts of the appliance; that is, the possible movement of the adjustable'section 3 in extension and contraction. Figure 3 is arear elevation view of the upright section of the appliance on the dotted line Z)b moulds (impressions, dentures and the like),

of Fig. 1, looking in the direction indicated by the arrows. Flgure 4 1s a sectional view of the upright section of the appliance on the dotted line cc, Fig. 2, looking in the direction indicated by the arrows. Figure 5 is a sectional View of the upright section of the appliance on the dotted line (Z(l of Fig. 2, looking in the direction indicated by the Figure 6 is a view of the flexible strip of celluloid, metal, paper or of any other suitable material which may be used with theappliance. Figure 7 is a longitudi nal or side view of the appliance as viewed from the right hand side or adjustable section side of the appliance. Figure 8 is a sectional view of Figure 1 on the dotted 'line r ec, looking inthe direction indicated by the arrows. Figure 9 is a sectional view of the adjustable section 3 on the dotted line ff of Fig. 2, looking in the direction indicated by the arrows. Figure 10 is a View of the adjustable section 8 on the dotted line g-g, Fig. 2, looking in the direction indicated by the arrows. Figure 11 is a top plan view of the appliance showing an impression in position upon the base plate and contained within the sides ofv the appliance; the appliance'being shown in part only. Figure 12 is a top plan view of the appliance showing a low-impression and lingual block contained within the sides of the appliance; theappliance being shown in part only. Figure 13 looking in the direction indicated by the arrows, showing a lower impressionand the, lingual block in position in the lingual space upon the base plate and contained within the sides of the appliance; the appliance being shown in part only. Figure 14 is a lon gitudinal sectional view of the appliance on the dotted line z' i, Fig. 1, lookinginthe flexible strip 4 is inserted and secured in the slot 15 1n the ad ustable section 3; the opposite end of 1 is inserted in the slot 18 in the upright section 2, Figure 1. The impression, denture or the like 1s now placed upon the base plate of the appliance with the certain 1 through the slot 18 in 2 (Figures 11 and 12).

The adjustable section 3 is then adjusted, as to position, so that its surface adjacent to the impression, denture or the like is in contact with. said impression, denture or the like (Figures 11 and 12) the said adjustable section 3 is now secured in said position by 13 on 12 (Fig. 7 The flexible strip 4 through its movement as it passes through the slot 18 in 2 is brought into immediate contact with the periphery of the impression, denture or the like which is being boxed-in. The strip 4 is then completely secured in said position in the slot 18 by the thumb screw 17 (Figures 11 and 12). The slotted slide Bar 5 is then brought into position, the U or V section of said bar being in contact with 4, and secured 'mounting a lower impression or denture, the

lingualblockfiisplaced in position, said block being composed of such material as is selected by the operator. The heels, 29, of the impression, or denture as the case may be, are placed in contact with 2. The adjustments of 3, 4L and 5 being made as previously described. The plaster or other plastic castforming materlal is now poured into said 1111- 'pression or denture. During and immediate- 1y following the pouring of thecast-forming material the appliance may be lightly arred or vibrated by well known means to settle the cast material.

A bite impression, 10, Fig. 15, is mounted upon the appliance in the same manner as a crown'or bridge impression. After the bite impression is properly mounted, the pouring of the cast-forming material selected follows, the upper section 32 of the bite impression 10, Fig. 15, being filled first. Afterthe cast has set or hardened in the upper section, 32 of Fig 15, the impression is reversed and'replaced upon the appliance in the usual manner, the upper surface of the cast 32 now being in contact with the base plate 1: the section 3301 thebite impression now being up, the pouring operation is repeated, the section 33 being thus filled.

In case that there is a space between the impression, denture or the like and the flexible strip,or the upright section; or between the lingual block and the lower impression, or denture, said space may be filled with tissue paper or with some other suitable material: this prevents the plastic cast-forming material used from flowing into the said space.

Through placing oil or the like upon the metal surfaces of the appliance coming'into contact with the cast-forming material, adhesion of the material to the appliance is prevented. 'These parts of the appliance may also be faced with celluloid for the same purpose: when celluloid-is used much smoother casts are secured.

my appliance, I claim as tion adjustably secured to the appliance, and 1 a flexible strip having one end secured to the upright section and the other end attached to the adjustable section in box forming relation, means of adjusting the adjustable section and the flexible strip so as to vary the size and the shape of the box thus formed, the said box thus formed being adapted to contain poured cast-forming material.

2. The formation of the walls of a box adjustable in size and shape, for boxing-in impressions, dentures and the like, by means of an upright section,an adjustablesection adjustably secured to the upright section, and a flexible strip having one end secured to the adjustable section and the other end secured to the upright section in box forming relation, means of adjusting the adjustable section also the flexible strip so as to Vary the size and the shape of the box formed by means of the adjustable section, the upright section and the flexible strip. 1 J

3. The formation of the walls of a box adustable 1n size and shape, for boxing-in impressions, dentures and the like, by means of an upright section, an adjustable section adjustably secured to the upright section, and a flexible strip having one end secured to the adjustable section and the other end adjustably secured to the upright sectiommea'ns of ad usting the adjustable section also the flexible so see) any the sizeand the shapefof the box formed by means "of the upaiglit 'section, the "adjustable section and the flexible strip of said applianee. e

4. The formation ofa box for an appliance foi" boxing-m "impressions, dentures "and the like by means of 'a-b'ase pl'ate, an upright sec- 'tiom an adjustable section adjustably' attached to the upri ht "section, and a flexible on and theethe -or free, end of the'said flexible strip adjustabIy seCur-ed to the upnight section, means'of ad usting the adjustabIe'seEtiOn"and tlie 'flexible strip so that the a'iea "enelo'sed' by tlie upright section, the xible'str-ip a'n'cl the base pl'ate ill vary in biidiiidhiiPb;

' 5. A boxffor bo'xih'gdh impressions, dentui'es-'-" ind the like, comprising 'a base plate,

3 an upiifihtsection, 'an adjustable'seetion adj ustably securedto' theupright'section, and a flexiblestrip-liavingbneend fastened to the ustzibl'e section andthe other end fastened to the ubfigh't sec-tion,;means of adjusting the ii st'able section and the flexible stri 'so "that the' box forined by the uprig ht section,

the adjustable section, the flexible strip and thebisie plate will vary-in size'and shape.

I) 6. A box, adjustable in size and shape, for

boxing-in'impressions,dentures and the like,

box being formed by afbas'e plate, an'upyisecuifed toithetupi ight sectionfand a ff'fiexible"st'rip havlng one end securedin a slot thi oiib'li "a-fslot the u right sjection and adjjistably f seeuredfin sai -soc, the lower edge fle xible"stiipfb'eing in Contact 'Wltll tliesagd-baseiplate.

den ures the lilie, coinptisilig a base platefa'n iip'right""seetio'n, adjustable '"ri'p havifi one ends'ecu'ied to the adjustable 'fri lit session, an adjustable section adjustin the adjustable "section. and the (it-i161, or

n appliance for boxingl-in imprestion adjustablyattached to the base plate of the said appliance, means of placing the said slide bar section in contact with the flexible strip and of firmly securing the said slide bar section in said position.

9. An *applian'ce of the class described, comprising abase plate, an upright section, an adjustable section adjustably' secured to the'upright section, and a flexible strip, said flexible strip being adapted to be adjustably" one end securedto'the adjustable section and theother end adjustably secured to the up iright section in box forming relation, said box being-adapted'to contain a-mold adapted "to contain poured cast-forming material.

11. A box, adjustable in size and shape, for boxing-1n impressions, dentures and the like,

"said box'being formed by a base plate, an upright section, an ad ustablesection adjust- 1, ably secured to the uprlght section, and a flex- 'ible strip of celluloid havingone end adjustably secured to' the upright section and the other'end adjustably secured to the adjustable section in box forming relation, means of adjusting theadjustabl'e section and the flexible strip of celluloid so thatthe said box Will vary in sizeand-shape.

, .ELZAR. STEALY.

f ction; a flexible i fstriatin'g one end seo if' fi ee; end 0 the; said flexible stri adj ustably secured totlie upiiglitsectibn, an adj ustab le setion ad'jiistably attached to the base 151ate,-mei f p1 fth'e said =a djustable ""seetio u incofitzibt W1tlI-theflexible strip and of sin-11y seeuris the said adjustabl Igection in said position; i

ap phance for boxing-in impresdeiituTes-and -tlie likecoin, risins 'a 7 7 p a base plate, an upright sectloman ad ustablesection adjesta bly secured to "the t'lpl igllt ct iony a V {ser'ted -into and sec ie d in a-slot in theadjustabl'ese'c-tion and the other, or'free, end of the said cfiexible stri inserted into a slot in thegsatd apri ht seetion, ans of securing -the frees d ofj tlie ai d fle. desired position in thefislot in -the "said upible strip: in anymn'mitheether,

fightsectioneand an sdjustable'slide b'arsecupright sec 

